Certain habits which horses acquire while standing in the stable, habits which depend upon peculiarity of temper and constitution in some cases, while in others they are due to imitation, require correction, as far as it may be possible to correct them. Crib-biting and wind-sucking are perfectly well known to horse-owners; weaving, a singular habit of moving the head from side to side; drawing the halter-ropes by the attached blocks up and down through the manger-rings; and the extremely unpleasant habit of kicking, particularly at night, are all of them productive of a great deal of annoyance, and some of them - crib-biting and wind-sucking for example - are distinctly injurious, the two latter deserving to be classed under the head of unsoundness, as they certainly cause damage to the teeth, and lead to attacks of colic, loss of condition, and even more serious affections, and certainly render an animal less capable of performing the work which is required of it, than it otherwise would be.

All these stable vices are fully considered in the chapter devoted to that subject.